API Reference
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    EmfOutput: Readonly<
        {
            _aws: {
                CloudWatchMetrics: {
                    Dimensions: [string[]];
                    Metrics: MetricDefinition[];
                    Namespace: string;
                }[];
                Timestamp: number;
            };
            [key: string]: string
            | number
            | object;
        },
    >

    The output of the serializeMetrics() method, compliant with the Amazon CloudWatch Embedded Metric Format (EMF).